Propeller case



C. S. EGBERT -PROPELLER CASE March 22, 1927. 1,622,137

Filed March 18, 1924 :16 11V VEN T OR Patented Mar. 22, 1927.

UNITED STATES cLIo' s, nesnar, on na cton, HIO.

raorntnnn oasn.

Application filedMarch 18, 1924.

This'invention relates to a case for propeller blades for use in storing and ship ping blades or generally for protectmg blades against Weather and injury.

Propeller blades have heretofore been shipped carried unprotected on the side of an airplane, have been placed uncovered in storage oftentimes in cold and damp places, and have been shipped by freight in box containers without suitable protection to the blade against injury and without protection against the weather. As a result, blades have been damaged and warped and, if not rendered entirely useless, required considerable renovating before they could be used after shipment or after being in storage. The case provided by the present invention is designed to afford absolute protection to the varnish and to the blade generally under all of the conditions above enumerated and comprises a water-proof and weather-proof pocket having weather-insulating and shockabsorbing material therein, the entire container being sealed against Weather when the blade is packed therein.

In the drawing illustrating the invention,

Fig. 1 is a view of a propeller case made in accordance with the invention shown. closed, or when a propeller blade is packed therein.

Fig. 2 is a view of the open end of the case disclosing one end of a propeller blade inside the case where one side of the mouth of the pocket is turned back, the closing flap being also opened and turned down more 0 early to illustrate the construction.

Fig. 3 is an enlarged section detail through the month end of the pocket shown sealed as when a propeller blade is packed therein.

The case is in the form of a pocket, the length of the propeller blade or slightly grei-iter than this length to receive the blade cox-n1 iodiously and has an open end through which the blade may be inserted. The case is made in three plies of material, an outer ply of watershed ducking 10, a middle ply of leak-proof cloth 11, such as rubberized material or the like, and an inner ply of heavy weaflier-insulating and shock-absorbing material 12 of heavy felt, relatively soft in texture so as not to mar the paint or aluminum leaf of the blade with Which it comes in contact. The ducking 10 is preferably of a single piece doubled over and sewed at the edges, as indicated at 13, the entire length of the pocket and at one end, leaving Serial rim-700,100.

tl'ie'nrouthend 1 1 open to receive the blade. The plies 11 and l2 are secured to the ply 1O by-stftching'as sho'wn'at 1'5 longitudinally and transversely of the pocket. The

outer ply at the mouth of the pocket is turned in over the inner ply 12 as shown at 16 and suitably siitched in place. A closing flap 17 stitched or otherwise secured to the ply 1O pocket, extends snugly over the mouth end of the pocket to seal the same and has ring snap fasteners 19 adjacent the free edge thereof to engage studs 20 riveted or otherwise secured to the ply 10 on the opposite side of the mouth end of the pocket.

The entire case it will be seen is relatively yieldable and exceedingly serviceable and a blade packed therein in storage or shipment is procteted very well against Water or weather by the Water-proof and weatherproof outer plies of which the pocket is constructed and also by the inner ply of weather-insulating material which further serves as a buifer or shock-absorbing lining for the pocket to absorb all shocks to which the blade may be subject in storage or shipment. It has been found that cases constructed in this manner give continued satisfactory service over exceedingly long periods of time and also protect the blades against war-page and injury and it is never necessary to do any renovating due to injury of the paint or aluminum leaf While in storage or shipment.

I claim:

1. A case for airplane propeller blades comprising a pocket approximately the length of the blade made of a single piece of water-shed ducking doubled over and sewed at the edges leaving an open end to receive the blade and a closure foldable over the periphery of the pocket the entire length of the opening to seal the same, a lining next to the ducking of leak-proof cloth, and an inner lining of shock-absorbing felt.

2. A case for airplane propellers comprising a pocket made of ducking closed the entire length and at one end but open at the other end to receive a propeller, a lining next to the ducking of leak-proof cloth, an inner lining to be next to the blade or shock-ab sorbing felt, and a flap foldable from one side of the pocket over the edge to overlie the other side of the pocket for closing and sealing the open end of said pocket having snap fasteners thereon engaged on the far at the point 18 on one side of the j side of the pocket from the side where the flap is secured.

3. A case for airplane propellers comprising a pocket having three-ply Wells, connposed of an inner ply of felt, a middle ply of leak-proof cloth and an outer ply of Weter-shed ducking, the outer ply forming the body of said pocket being made in one piece doubled on itself and sewed the length of the pocket and at one end leaving the other end open Where the edges of the ply are turned in to overlie the inner plies and form ing part of the seal for the open end of the pocket, and a flap secured on the outside of the pocket at the open end for passing over the open end to close and seal the same and having snap fasteners for engagement on the opposite side of the mouth end of the pocket.

In testimony whereof I affix my signature.

CLIO s. EGBERT. 

